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ANU Nanotube and Nanowires
Welcome
Ball
Milling
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Tiny fullerene balls and carbon nanotubes create
a new and exciting era to almost all scientific fields, especially materials
science. At the Australian National University (ANU), carbon nanotubes,
boron nitride (BN) nanotubes, nanoparticles, nanowires and other nanomaterials
have been produced by using a high-energy ball milling and annealing method,
which was developed by the group in 1998. Our objectives are to produce
nanotubes and nanowires in larger quantities and high yield, and also
conduct fundamental research in exploring new properties and applications
of these nanomaterials at a large scale. Here you will not only find basic
information about carbon nanotubes, BN nanotubes and high energy ball
milling technique, also cannot afford to miss a good opportunity to explore
the latest research progress in our research group as well as nanotube
related news around the world. Start the scientific journey on our website
NOW!
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Abstract: This letter reports the electrical and
field-emission properties of Au-decorated bamboo boron nitride nanotubes
(Au-BNNTs). The insulating BNNTs become metallic after Au coating
as the Au coverage exceeds a critical value. The Au decoration modifies
the work function of the BNNTs and, as a consequence, the field-emission
current densities of Au-BNNTs are significantly enhanced. Correspondingly,
the turn-on field of the Au-BNNTs is reduced to one third and the
emission current density is increased by four orders in contrast to
pure BNNTs. The experimental results demonstrate that such Au-BNNTs
are promising electron field emitters.
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